Circuit for generating reference current

Details Circuit for generating reference current Circuit for generating reference current

2007-07-24

2007-07-24

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S513000

Reexamination Certificate

active

11303921

ABSTRACT:
Disclosed herein is a circuit for generating reference current. The circuit for generating reference current comprises a current providing unit for generate a PTAT current, mirroring the PTAT current to generate an analogous PTAT current and generate an analogous BGR current, a current ratio control unit for generating an analogous BGR current in a first ratio, a PTAT current in a second ratio, and a current corresponding to the difference between the analogous PTAT current in the second ratio and the analogous BGR current in the first ratio, and a current increasing/decreasing unit for generating a BGR current in the first ratio.

REFERENCES:
patent: 5614816 (1997-03-01), Nahas
patent: 2005/0285666 (2005-12-01), Garlapati et al.
patent: 2006/0006858 (2006-01-01), Chiu

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